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Staff.  
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90.— (1)  A corporation shall, as well as appointing a director general, appoint such and so many persons to be members of the staff of the corporation as it may, from time to time, determine but, subject to subsection  (2), a person shall not be appointed under this section to be a member of staff of the corporation unless he or she has been selected by means of a public competition.  
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(2) The requirement under subsection  (1) of being selected by means of a public competition does not apply in relation to:  
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(a) an appointment consisting of the promotion of a person who is already a member of staff of the corporation,  
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(b) an office for which, in the opinion of the corporation, specialised qualifications not commonly held are required, or  
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(c) an office to which appointments are made for limited periods only, being periods not exceeding 2 years.  
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(3) A member of staff of a corporation shall hold his or her employment on such terms and conditions as the corporation from time to time determines.  
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(4) A corporation may perform any of its functions through or by any of its members of staff duly authorised by the corporation in that behalf.  
 
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